waste gate

例句：

1. 1. The city has installed a wastegate to prevent litter from entering the park.
   城市安装了废物门，以防止垃圾进入公园。
2. 2. The construction workers have to pass throughthe waste gate before they can enter theconstruction site.
   建筑工人在进入工地之前必须经过废物门。
3. 3. The waste gate isdesigned to separate different types of waste andreduce pollution.
   废物门的设计是为了分离不同类型的废物并减少污染。